An editorial in the BMJ (12 May) brought my attention to new Department of Health/Cabinet Office guidance on this. The editorial thinks it replaces existing guidance from 2005. That original guidance was produced by all the UK health departments, not just one of them, so I am not sure.
But I have added the new draft (consultation period ends tomorrow: sorry!) to our avian and pandemic influenza webpages, and annotated it and the 2005 guidance.